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Finding the Fourth Proportional to 70,143.39, 96,794.22 and 39,928.62

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Solution

The fourth proportional to 70,143.39, 96,794.22 and 39,928.62 is: 55,099.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,143.39 : 96,794.22 = 39,928.62 : x
  2. Step 2: Convert to fraction form
    70,143.39/96,794.22 = 39,928.62/x
  3. Step 3: Cross multiply
    70,143.39x = 96,794.22 × 39,928.62
  4. Step 4: Simplify right side
    70,143.39x = 3,864,859,628.58
  5. Step 5: Solve for x
    x = 3,864,859,628.58/70,143.39
  6. Step 6: Final answer
    x = 55,099.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.